The x frames are just as poor of a choice for a serious gun as a shockwave is, you just don't get as many posters making threads and comments about how great they are for HD, so they don't need to be called out on that foolishness as often as the Shockwave fans do.
I wasn't referring to the Shockwave's potential application as a Home Defense Firearm, but rather as a Wilderness Defense Firearm.
That being said, I myself use the Shockwave for Home Defense, and specifically chose it over a full-size 590 because it would be nearly impossible to maneuver around within my home with a full-length Shotgun, so the benefits of a shoulder stock was effectively moot. Furthermore, with proper technique and sufficient strength, the Shockwave works well as a Home Defense firearm since distances within ones home aren't nearly long enough for any increase in pellet spread or any (if any) loss in accuracy at such close range to make a difference.
There seems to be a misconception that the ONLY way to fire a PGO Scattergun is from the hip, because if you attempt to aim it using a conventional hold then the recoil force will drive the firearm backwards directly into the shooter's face. However, with sufficient arm strength and a proper push/pull grip on the gun, it absolutely will not come back far enough to hit the Shooter's face.
Furthermore, there are other methods of gripping/aiming the firearm which eliminate that risk altogether, such as tucking the rear most part of the grip between the pectoral and bicep, thus allowing it to be aimed without the gun having anything to slam backwards into.
Obviously there are arm braces for the Shockwave as well, but that's another story.
Suffice to say, things aren't always quite as they may appear to be in reality, and it's easy to miss a lot of facts if one bases their expectations strictly on assumptions formed strictly by appearance. If you want to say that the Shockwave isn't "the best" thing for Home Defense, (assuming there even is such a thing) then that's a valid statement, but to say that it's useless, a range toy, or otherwise an extremely poor choice merely because you cannot conceive any method/means of it being a useful alternative beyond the scope of your own perception is very much the opposite. Just because something isn't a good for you, doesn't mean that it's the same for everyone else. People each have their own limitations, and for those like me who lack adequate space to maneuver around with a full-length Shotgun but still desire the decisive defensive capabilities of a Shotgun, possess sufficient strength to manage the recoil, and can train using alternative methods of gripping/aiming the gun, the 590 Shockwave/TAC-14 make for an adequate alternative.
Last but not least, lets just go ahead and address the elephant in the room here, short shotguns are just plain cool, so even if that's the sole reason why anybody wants one, then that's all the reason that a free man needs to own one to begin with.
Everyone has a "movie gun" a gun they saw in movies or videogames that they own strictly because it's cool. Not everyone is willing to admit that because it doesn't sound tough or make the person who said it look like a stoic professional, but regardless, nobody buys every firearm that they own strictly for defensive/offensive purposes, and if they do, then they are probably new to guns and are just prioritizing getting guns they need before guns that they want. Not to say that there isn't any overlap there, but I digress, it's something that people do that there's no reason to be ashamed of, so if anyone here owns a Shockwave or whatever just because it's cool, then more power to them.